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<p>The 317L stainless steel has emerged as an essential material across numerous industries due to its excellent corrosion resistance, outstanding mechanical properties, and extensive adaptability. However, application of the 317L stainless steel is highly limited due to wear, high-temperature oxidation, as components commonly work under harsh conditions, including high corrosion, high salinity, and high temperature. This study used laser cladding technology to fabricate Ni60-WC coatings on the surface of 317L stainless steel. The effects of varying laser powers on its surface morphology, microhardness, wear resistance, and high-temperature resistance were systematically investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), a microhardness tester, a friction and wear tester, and a resistance furnace. At a laser power of 2.0&#xa0;kW, the Ni60-WC coating demonstrated uniformly distributed particles, with face-centered cubic (FCC) structure, and attained the highest average microhardness of 865.1 HV. The friction coefficient and wear loss reached their minimum values, with respective averages of 0.35 and 22.8&#xa0;mg, respectively. Furthermore, the optimal high-temperature resistance was achieved at a laser power of 2.0&#xa0;kW. The coating surface did not undergo any significant morphological changes after 35 thermal shock test cycles, attaining a mass loss rate of only 1.5%.</p>

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Microstructure and Properties of Ni60-WC Coatings Synthesized via Laser Cladding Technique on 317L Stainless Steel

  • 期刊论文

  • 发表日期：

    2026年5月17日

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  • Tianhao Zang,
  • Chunyang Ma

摘要

The 317L stainless steel has emerged as an essential material across numerous industries due to its excellent corrosion resistance, outstanding mechanical properties, and extensive adaptability. However, application of the 317L stainless steel is highly limited due to wear, high-temperature oxidation, as components commonly work under harsh conditions, including high corrosion, high salinity, and high temperature. This study used laser cladding technology to fabricate Ni60-WC coatings on the surface of 317L stainless steel. The effects of varying laser powers on its surface morphology, microhardness, wear resistance, and high-temperature resistance were systematically investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), a microhardness tester, a friction and wear tester, and a resistance furnace. At a laser power of 2.0 kW, the Ni60-WC coating demonstrated uniformly distributed particles, with face-centered cubic (FCC) structure, and attained the highest average microhardness of 865.1 HV. The friction coefficient and wear loss reached their minimum values, with respective averages of 0.35 and 22.8 mg, respectively. Furthermore, the optimal high-temperature resistance was achieved at a laser power of 2.0 kW. The coating surface did not undergo any significant morphological changes after 35 thermal shock test cycles, attaining a mass loss rate of only 1.5%.